How to remove empty items in iPhoto Photo Stream?
2 years ago, I linked both my iPad 4 and my Mac's iPhoto to Photo Stream. One year later, I decided to clean up memory, so I unlinked both from the cloud and turned off Photo Stream. I relocated many photos and deleted many others.
Recently, I linked my ipad back to the Photo Stream, and yesterday, my Mac. There's no problem with the new photos being synced. My problem is that there are so many empty photo items from 2 years ago (see photo) which I think are placeholders for photos that no longer exist on either the iPad or the Mac.
I would like to clean up these "empty items," but when I try to delete them, a popup window tells me I have to find the photos first, which I can't.
I am on a mid-2010 Mac running Yosemite 10.10, with iPhoto version 9.6.
iMac (21.5-inch Mid 2010), OS X Yosemite (10.10.2)